removing sandbox references
removing sandbox references

android-pay/s2ap-quickstart-java,samtstern/s2ap-quickstart-java,samtstern/s2ap-quickstart-java,samtstern/s2ap-quickstart-java,android-pay/s2ap-quickstart-java,android-pay/s2ap-quickstart-java,android-pay/s2ap-quickstart-java,samtstern/s2ap-quickstart-java